INTERNAL COMBUSTION ENGINE EXHAUST CLEANING DEVICE
    5.
    发明公开
    INTERNAL COMBUSTION ENGINE EXHAUST CLEANING DEVICE 有权
    内燃机排气净化装置

    公开(公告)号:EP2388451A1

    公开(公告)日:2011-11-23

    申请号:EP09838278.1

    申请日:2009-01-13

    IPC分类号: F01N3/08 F01N3/36

    摘要: An exhaust purification apparatus for an internal combustion engine includes a heating gas generation device configured to generate heating gas utilizing a part of exhaust gas flowing through an exhaust passage, the heating gas generation device including a catalyst with an oxidation function and a fuel supply nozzle configured to supply fuel to the catalyst, a selective reduction NOx catalyst provided downstream of the heating gas generation device, an aqueous-solution-of-urea supply nozzle, and a storage chamber configured so that the heating gas discharged from the catalyst is temporarily stored in the storage chamber and then discharged, the storage chamber being supplied with the aqueous solution of urea from the aqueous-solution-of-urea supply nozzle. Heat in the storage chamber promotes evaporation and hydrolyzation of an aqueous solution of urea supplied, allowing ammonia to be efficiently generated.

    摘要翻译: 本发明提供一种内燃机的排气净化装置,其包括:加热气体生成装置,其利用流过排气通路的排气的一部分来生成加热气体,该加热气体生成装置具备具有氧化功能的催化剂和燃料供给喷嘴 向所述催化剂供给燃料;在所述加热气体生成装置的下游侧设置的选择还原型NOx催化剂;尿素水供给喷嘴;以及储存室,其构成为将从所述催化剂排出的加热气体暂时储存在 储存室然后被排出,储存室被供应来自尿素水供应喷嘴的尿素水溶液。 储存室内的热量促进了所供应的尿素水溶液的蒸发和水解,从而有效地生成氨。